Jack disappaered in tutorial

Funny thing happened just now. I started a new game and in the tutorial when I went out of the chopshop, the cutscene with the two sabbat shooting me started. But they got killed without Jack appearing. When I went forward to the gate, he still wasn't there.I restarted the game with the same character and this time all went well. Since I couldn't reproduce the error, I dont't know what happened.